#include "stdio.h"

int main(void)
 {
    int a = 1;
    int *p;
    p = &a;
    printf("%d\n", a);
    printf("%d\n", *p);
    printf("%d\n", &a);
    printf("%d\n", p);
    printf("%d\n", sizeof(a));
    printf("%d\n", sizeof(p));
    printf("%d\n", sizeof(*p));
}